shadow problems

[Lothar1952]

Windows:
Version 1809 Build 17763.557

Cinema4D Version:
R 20.059

CPU:
AMD Threadripper 1950x

GPU:
Nvidia RTX 2080

GPU Version:
419.67

Light is added to sources
1) soft shadow reflects on smoke, but smoke doesn´t cast shadow.
2) area shadow - will render forever when getting to horizon.